Vaginal douching is a common gynecological procedure, usually used as a routine douche before medication for vaginitis or cervicitis, either with plain water or medication. The main purpose is to flush out the vaginal secretions to facilitate the absorption of vaginal medications. You need to clean the vulva and keep the douche clean by putting the diluted douche solution into the vagina repeatedly. If there is a lot of discharge in the vagina, it can flow out with the douche. In addition, vaginal dosing should be used as soon as possible after douching. A certain amount of drug residue will also come out after vaginal administration, so you should douche vaginally again before reapplying the drug.